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I keep an ACF but not with fish. Any fish in the tank she eats - immediately. She wiped out about a dozen in an hour or so. I suppose very large fish might be safe, but if mine is any indication, she'd still try to eat them. Of course, my ACF is full grown and about six or seven inches with a mouth of about 4 1/2 feet or so.

thats a big mouth lol. Yea, unless you have very large fish theyd all be doomed. And even the large ones might get attacked and injured by it. If you want frogs in an aquarium you should try african dwarf frogs instead. They only get 1.5" at the biggest, and are peaceful and know what can fit in their mouths.

Hes gonna get 6 inches or more though, and then anything it sees is lunch. Right now it looks small, so its fine, but it will grow and then its gonna be bad, so better to find it a separate tank now before it gets big.